Which three statements are true about beeswarm charts in cisco dna center assurance for interpreting network insights?

a. circles represent a building and polygons represent an ap radio.
b. circles represent an ap radio, and polygons represent a building.
c. the number of issues is reflected by a change in color in the shape on the beeswarm chart.
d. issues are not represented in a beeswarm chart; only network insights display.